Question

Need help with this problem. Need to write a MATLAB program with the following options/conditions attached using for and while loop. Thanks in advanced!

el come!!! Choose option Erler grade 1:Aveage frue Cenerate a htumbe lf grade bulrw 50- Iwalid Gmie Entor a number: 3 h-o the first 3 even nyMbes are: 0 2 4

Answer 1

Source code:

fprintf('Welocme!!!\n');
fprintf('Choose option!\n');
fprintf('1.Compute Grade\n');           %printing info
fprintf('2.Generate a number.\n');
fprintf('Enter -1 to stop.\n');                           % enter -1 to stop execution
var=input('Enter option number:');
while(var ~= -1)                         %to run program repeatedly
    if var == 1                        %case 1
        grade_1=input('Enter grade 1:');
        grade_2=input('Enter grade 2:');
        if grade_1>=50 && grade_1<=100       %condition checking
            if grade_2>=50 && grade_2<=100    %condition checking
                avg=(grade_1+grade_2)/2;  
                if avg >= 75
                    fprintf('Averae grade:%d\n',avg);
                    fprintf('You PASS.\n');
                else
                    fprintf('Averae grade:%d\n',avg);
                    fprintf('You FAIL.\n');
                end
            else
                fprintf('Invalid grade 2.\n');                  %printing info
            end
        else
            fprintf('Invalid grade 1.\n');         %printing info
        end
        var=input('Enter option number:');
    elseif var == 2                         %case 2
        num=input('Enter a number:');                      %input from user
        n=0;
        i=0;
        fprintf('The first %d even numbers are:\n',num);
        while(i < num)
            fprintf('%d ',n);                        %printing even numbers.
            n=n+2;
            i=i+1;
        end
        fprintf('\n');
        var=input('Enter option number:');
    else
        fprintf('Enter correct choice.\n');
    end
end

Sample output: